HD - Industries, Land Use, Labor 557
HV - Social Pathology, Criminology 454
HS - Societies 295
HX - Socialism, Communism, Anarchism 241
HQ - Family, Marriage, Women 170
HE - Transportation and Communications 155
HT - Communities, Classes, Races 153
HG - Finance 101
HF - Commerce 97
HC - Economic History and Conditions 77
HB - Economic Theory and Demography 73
HN - Social History and Conditions 73
H - Social Science 71
HA - Statistics 58
HM - Sociology 29
HJ - Public Finance 23
TX - Home Economics 5
Z - Books and Writing 4
CS - Genealogy 2
S - General Agriculture 2
F - General American History 1
JV - Colonization, Immigration 1
RA - Public Medicine 1
T - General Technology 1